How to move mouse with c++

#include <Windows.h>
#include <Tlhelp32.h>
#include <stdio.h>
#include <string>
#include <iostream>
#include <fstream>
#include <sstream>
#include <time.h>
void mouseLeftClick(const int x, const int y);
// window
HWND hWindow;
int main()
{
    // find window
    hWindow = FindWindow(NULL, "Calculadora");
    if (NULL == hWindow) {
        OutputDebugStringA("Couldn't find application.");
    }else{
        if (!SetForegroundWindow(hWindow)) {
            OutputDebugStringA("Couldn't set application to foreground.");
        }else{
            // click on 1
            mouseLeftClick(20 265));
            Sleep(500);
            // click on 2
            mouseLeftClick(60, 265);
            Sleep(500);
        }
    }
    return 0;
}
void mouseLeftClick(const int x, const int y)
{
    // get the window position
    RECT rect;
    GetWindowRect(hWindow, &rect);
    // calculate scale factor
    const double XSCALEFACTOR = 65535 / (GetSystemMetrics(SM_CXSCREEN) - 1);
    const double YSCALEFACTOR = 65535 / (GetSystemMetrics(SM_CYSCREEN) - 1);
    // get current position
    POINT cursorPos;
    GetCursorPos(&cursorPos);
    double cx = cursorPos.x * XSCALEFACTOR;
    double cy = cursorPos.y * YSCALEFACTOR;
    // calculate target position relative to application
    double nx = (x + rect.left) * XSCALEFACTOR;
    double ny = (y + rect.top) * YSCALEFACTOR;
    INPUT Input={0};
    Input.type = INPUT_MOUSE;
    Input.mi.dx = (LONG)nx;
    Input.mi.dy = (LONG)ny;
    // set move cursor directly and left click
    Input.mi.dwFlags = MOUSEEVENTF_MOVE | MOUSEEVENTF_ABSOLUTE | MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP;
    SendInput(1,&Input,sizeof(INPUT));
}